Circular sawing machine



(No Model.)

D. M. MAXON. CIRCULAR SAWING MACHINE. No. 328,954. Patented Oct. 27, 1885.

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DANIEL M. MAXON, OF BAY CITY, MICHIGAN.

CIRCULAR SAWING MACHINE.

SPECIPICATIDN forming part of Letters Patent No. azaese, dated October 27, 1885.

Application filed April 8, 1885. Serial No. 161,555. (No model.)

To all whom it may concern:

Be it known that I, DANIELM. MAxoN, a citizen of the United States, residing at Bay City, in the county of Bay and State of Michigan, have invented certain new and useful Improvementsin Gircular Sawing Machines; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in circular sawing machines adapted to cutting dimension material from the log; audit consists,

chiefly, in a means of feeding the log to the saw in such a manner that the log can be cut entirely up into small dimension pieces-as hoops, laths, handles, &c.the said pieces being cut by commencing at the outside surface of the log and causing an intermittent rotary motion to be imparted to the log to give the proper dimension to the piece cut off until the log is entirely out up; also in a means of smoothing up or rounding one side of the said dimension piece and cutting one. edge of the same before it is cut from the log; and the object of my invention is to provide a machine which will cut from the log hoops or other like material and finish the same with a planed or rounded surface at one and the same operation.

In the drawings, Figure 1 is a top or plan view of my improved sawing-machine. Fig. 2 is alongitudinal vertical section of the same. Fig. 3 is a transverse vertical section. Fig. 4 is a detached portion. Fig. 5shows the manner in which thepiece is taken out of the log.

Similar letters refer to similar parts throughout the views.

a represents the bed-pieces of areciprocating carriage, and a are wheels upon which the carriage rests, the wheels a being provided with a groove, which holds the carriage to a suitable track, and the carriage is caused to reciprocate to a proper distance by any suitable means and carries the log to be cut.

b is a saddle, the opposite ends of which rest upon and are secured to the bed-pieces a, and at or near its central part it has an upward-extending portion provided with the groove b, into which rests the sliding box 0. These boxesc are arranged to carry the screwplugs c, which extend toward each other, and are adapted to screw into opposite ends of the log which is to be cut. Extending below the saddle b, at a point nearly below the vertical groove 5, is a box or bearing, d, arranged to support the shaft or roller cl, which extends the whole length of the carriage, and is sup ported near its ends by the cross pieces e, and its ends are provided with the ratchet-wheels e. The levers f are also pivoted to the ends of the roller d, and the pawls f are pivoted to the levers, and are arranged to engage with the ratchet-wheels 6, so that when the levers are lifted the roller is caused to rotate. Upon the bed-piece a, and extending its entire length, is placed the piece g, having an inclined portion, 9, on the upper side and near the end thereof, forming a higher portion, g, and the outer ends of the levers f are arranged to rest upon the piece 9 in such a manner that when the piece 9 is moved a short distance in one direction the lever will rest upon the higher portion, 9, and when the piece is moved in the opposite direction the lever will rest upon the lower portion, 9.

In a, suitable position near to the roller d is placed the vertical saw h, with its upper portion extending to a proper distance above the feed-roller d.

h is the shaft which carries the saw h, and it also carries a rossing-wheel, i, located so that it will be near the roller (1 on the side opposite that occupied by the saw h'. This wheelz' is provided with suitable knives or cutters for removing the bark from a log and reducing it to an even outside surface, and is arranged with an extended hub, 2', adapted to receive a lever or means of sliding the wheel upon the shaft h, and is caused to rotate by a feather, j, inserted in the shaft. This allows the wheel to be adjusted to logs of different sizes, and also allows it to be run without cutting after the log has received an even surface.

A log designed to be cut into dimension piecesas hoops, laths, pickets, &c.-is placed between the saddles b, with the plugs c screwed into the centers of the opposite ends of the log, and the boxes 0 and grooves b hold,the log in a proper position to rest lengthwise upon the roller (1. The rossing wheel 71 is then pushed toward the roller 01, and the carriage, together with the log, is caused by suitable power and means to reciprocate, and as the log moves forward the wheel 73 cuts into and removes the bark, and the outer surface of the log is smoothed up for forming one edge of the pieces cut off afterward by the saw, which cuts into the log to such a distance as is required for making the width of the piece cut off. When the carriage arrives nearly to the end of its travel, and after the saw and wheel have left the cut in the log, the piece g catches a stationary piece properly located for the purpose, and is driven backward, which raises one lever and operates the roller d, to turn the log toward the saw, while the opposite lever drops to the narrow part of the piece 9, and the pawl is in position to set over the roller again by a similar operation at the opposite end of the travel of the carriage. This setting operation is arranged to take place just after the saw has cut through the log at either end, the saw cutting when the carriage is run in both directions, and may be easily changed to use only one lever and cut in one direction.

Zis a horizontal saw or cutter located just in advance of the cutting part of the vertical saw h, and is carried and driven by a vertical shaft, Z, properly supported and provided with pulleys, &c.. This saw Z is designed to cut one edge of the dimension piece before the piece is cut from the log, and in some casesv as in hoop-cuttingI place a suitable cutterhead, on, just below the saw Z, and the cutters therein plane and give a rounded and finished surface to the hoop before it is cut from the log, so that when the hoop is cut it is also planed and rounded up in proper shape to be driven upon a barrel. As the pieces are cut off by the saws h and Z, the log is reduced in size, and as soon as the log has been cut over sufficient to remove the bark the rossing-wheel t is slipped on the shaft until it runs free of the log, which has then received a. suitable surface to rest properly upon the feed-roller d, and as the log is reduced in size the boxes 0 travel downward in the groove 12 until the center or heart portionis reached, when the center piece is removed and the'operation is again repeated upon another log.

The groove 12 is formed so that its upper portion will extend somewhat over the saw h, so that when the log shall be first placed in position upon the carriage for sawing, the saw will out very nearly in line with the center of the log, and the weight of the log overhangs toward the saw but as the log grows smaller the groove b tends to bring the center of the log more directly over the roller at, so that the log, as its diameter grows less, will not drop below the upper side of the roller dand cause the saw to out into the log deeper than when the log was larger.

The roller d may require in some cases to be provided with spurs, or to have a fluted surface, in order to properly hold the log, and other mechanism may be applied for causing the roller to revolve for cutting different kinds of material; but the advantage gained in using this roller for setting the log over to the saw is, that the gravity of the log will always hold it in proper position in relation to the .saw for cutting,and the power required to set the log over is much less than by the means usually employed; and, also, the material cut from the log in this manner leaves the grain of the woodin the piece parallel with the sides thereof, and the liability of breakage in bending is thereby reduced.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a circular sawing machine, a saddle placed across the carriage and provided with an upward-extending inclined groove for guiding the log, in combination with a roller placed lengthwise of the carriage and adapted to carry the log upon its upper surface, and by an intermittent rotary motion to set over the said log to the saws for cutting dimension pieces, substantially as described, and for the purpose set forth.

2. In a circular sawing machine, the combination of a roller, d, placed lengthwise of a reciprocating carriage and adapted to carry the log and arranged to set over the said log to the saw, a vertical saw, it, and horizontal saw Z, arranged to out into the under side of the log on one side of the said roller, with a ross ing-wheel, -i,provided with cutters and located on the opposite side of the said roller d, and arranged to cut into and remove the bark from the log, substantially as and for the purpose set forth.

3. In a circular sawing machine, the roller d, placed lengthwise of the carriage and log, and supported by the saddles b, and arranged to carry the log, in combination with the ratchet-wheel e, secured to end of the said roller d, the lever f, pivoted to the end of the roller d and carrying the pawl f adapted to engage with the said ratchet-wheel e, and the piece 9, secured to the carriage and provided with the raised portion g and the inclined part 9, and adapted to engage with the outer end of and operate the said lever f, substantially as and for the purpose set forth.

4. In a circular sawing machine, a roller, d, placed lengthwise of the carriage and adapted to sustain the weight of the log, and mechanism for revolving the said rollerintermittently to set the log over to the saw, in combination with the saddles I), placed across the carriage near the ends of the said roller and arranged to support the same, an inclined groove, 1), in the upward-extending portion of the said saddles, and the plugs 0, arranged for one end to be driven into the log, and the oppoc, passing through the said boxes and into site end to rest into and be guided by the the log, substantially as and for the purpose said inclined groove, substantially as and for set forth.

the purpose set forth. In testimonywhereof I affix my signature in 5 5. in a circular sawing machine, the COlIlpresence of two witnesses.

bination of the saddles b, provlded with the i p D ANIEL M- MAXON.

upward-extending groove b, the feed-roller d,

supported by the said saddles and adapted to Witnesses:

receive the Weight of the log, the sliding boxes JAMES E. THOMAS, IO 0 within the said groove, and the serew-plugs G. P. THOMAS. 

